修复问题，优化bug和游戏，resource资源拆迁

Assets/songsDatabase/SongDataLoader.cs

@@ -1,3 +1,4 @@
+using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using UnityEngine;
@@ -6,23 +7,25 @@ public class SongDataLoader : MonoBehaviour
 {
     private string jsonDirectory;
     public List<SongDataSerializable> loadedSongs = new List<SongDataSerializable>();
+    [SerializeField] private int _yieldEveryNFiles = 5;
 
     void Start()
     {
         jsonDirectory = Path.Combine(Application.persistentDataPath, "SongDataJson");
-        LoadAllSongsFromJson();
+        StartCoroutine(LoadAllSongsFromJsonRoutine());
     }
 
-    void LoadAllSongsFromJson()
+    IEnumerator LoadAllSongsFromJsonRoutine()
     {
         if (!Directory.Exists(jsonDirectory))
         {
             Debug.LogError("JSON �ļ��в����ڣ�");
-            return;
+            yield break;
         }
 
         loadedSongs.Clear();
-        string[] jsonFiles = Directory.GetFiles(jsonDirectory, "*.json");
+        IEnumerable<string> jsonFiles = Directory.EnumerateFiles(jsonDirectory, "*.json");
+        int counter = 0;
 
         foreach (string file in jsonFiles)
         {
@@ -31,6 +34,9 @@ public class SongDataLoader : MonoBehaviour
             loadedSongs.Add(jsonData);
             // 由于 SongDataSerializable 现在只存储动态分数，不再包含 songName
             Debug.Log($"Loaded persistent song data from: {Path.GetFileName(file)}");
+            counter++;
+            if (_yieldEveryNFiles > 0 && counter % _yieldEveryNFiles == 0)
+                yield return null;
         }
     }
 }